K-marks Share definition Flag (Noun) A person that gets suspended for having 18 bottles of liquor in their car at school. Person 1: I have beer in my trunk Person 2: Dont let Peggy know, or you'll be a K-marks K-marks by KarynM May 26, 2009 0 0 Get merch Get the K-marks mug. Buy Now — $32.95 See more merch